for the first time today, i had this taste of vomit in my mouth all day today, no matter what i eat or drink. when i do, it always come back. i don't have morning sickness at all, just waves of nausea throughout the day. i bought mint gum to get rid of the taste, but i feel thats just a cover-up. i had the burps and some of the bile actually came up. veeeerrrry gross. is this heartburn or something? or something else?